Gyratory crusher.



B. W. TRAYLOR.

GYRATORY ORUSHER.

APPLICATION FILED 1330.7, 1911.

Patented Dec. 17, 1912.

UNITED stra' lns ra ran'r OFFICE BRUCE W. TRAYiJOR, OF NEW YORK, N. Y.,ASSIGNOR TO TRAYLOR ENGINEERING AND MANUFACTURING ('10., A CORPORATIONOF DELAWARE.

GYRA'I'ORY CRUSHER.

Specification of Letters Patent.

Application filed December 7, 1911. Serial No. 664448.

To all whom, it may concern: 7

Be it known that I, BRUCE W. TRAYLOR, citizen of the United States,residing at New York, N. Y., have invented certain new and usefulImprovements in Gyratory Crushers, of which the following is aspecification.

My present invention relates to improve; ments in gyratory crushers, andhas for its object to provide an apparatus of greatly increased strengthand durability, andone in which a very short shaft may be used, and thebearing for the lower end of the shaft brought close to the crushingpoint, thereby removing the danger of the springing of .the shaft whenoperating upon hard rock or in case of foreign substances getting intothe crusher.

With this and other objects in view, the invention includes the novelfeatures of construction and arrangement and combination of partshereinafter described and particularly defined in the appended claims.

A crusher constructed iii-accordance with my invention is illustrated inthe accompanying drawings, in which Figure 1 is a transverse verticalsection; and Fig. 2 av horizontal section on line 22 of Fig. 1.

Referring by reference characters to this drawing, the numeral 1designates the crusher shaft, the upper end of which is journaled in asuitable bearing in a spider 12 supported by the main frame or body 14of the crusher, said body also supporting a hopper 13 for the receptionof the ore to be crushed which passes therefrom between the arms of thespider 12. 'lheshaft 1 carries the mantle head 6 of truncated conicalshape supported by the core .5 tapered upon its outer surface and heldin place by nut 3 bearing on washer 4, This mantle head coacts with thelining 7-of the body in the manner common in' these gyratory crushers,so that further description thereof is deemed unnecessary. The body ofthe crusher is widened or hollowed out justbelow the crushing surface'toform an ore receiving chamber 14, and provided with a delivery opening14" at one side. The main frame or body of the crusher is extendedinward below this ore chamber and is provided with an integraldownwardly extending annular flange 14, which forms the bearing for theeccentric at the lower end of the shaft. The floor or bottom of the orechamber is formed by a horizontal rotary table 16 made in two or more.sections, which can be put in through the opening 14 in the sideofthecrusher body, and after insertion, be bolted together by bolts 16passing through lugs 16*. This table is provided, on its under side,with a smooth bearing surface A,

which rests upon a corresponding annular track At formed by an annularflange carried by the mainframe or body of the crusher, and beingpractically an upward extension of the flange 14. This flange isprovided with an annular oil groove or channel which is kept filled withoil so that this bearing surface is keptproperly lubricated, and thetable turned with a minimum of friction. The table is provided at itsinner edge with upwardly and downwardly projecting flanges 16 and 16,the latter of which depends below the surface of the bearing justdescribed, and thus prevents the vof the flange" 16, so that during thegyratory motion of the shaft 1, these plates play back and forth over,the surface of the flange 16 of the table, maintaining always atightjoint therewith. The table is provided on its lower face withan'annular rack 31 with which engages the gear 31 operated by shaft 30from any convenient source of power whereby the table is rotated. Thetable is provided with an annular wear plate 17 secured thereto bycountersunk bolts for the purpose of taking the wear off from the table,and a lining ring or band 18 is provided for the wallof the orereceiving chamber inline with the table to pro tect the body of thecrusher from wear at this point. At 19 is shown an unloading apron ordeflector which is bolted to the body of the crusher, as indicated at19, and

Patented Dec.1 7,1912.

extends inward across the surface of the table, so that as the tablerotates with the ore thereon which has dropped through Heretofore', sofar as I am aware, the de- 110 A livery from crushers of this type hasbeen entirely by gravity, which requires a large amount of space to getthe proper inclination, and hence necessitates a tall structure,requiring-a long shaft with the lower hearing a long distance removedfrom the crush ing point. The result of this is great liability ofspringing the shaft, especially when encountering large lumps or piecesof foreign matter. By my improved construction the eccentric bearing isbrought exceedingly close to the point where the work is done. It willbe further observedrthat the eccentric bearing now to be described morein detail turns within thefiange 14 heretofore described, which is-aninte ral part of the body of the crusher, thus giving additionalstrength. In gyratory crushers heretofore made of. which I am aware,this lower hear ing has been formed on or carried by a bot- .tom castingbolted to the body of the crusher, which casting is difficult to securefirmly in place under the great strain to which itis subjected. Thisbearing flange 14 is lined with a steel bushing 13, which is removablewhen worn out. The eccentric sleeve is indicated at 20, and is providedwith a surfacing of Babbitt metal 20 turning within the steelbushing-l3, while between the eccentric sleeve 20 and the lower end ofthe shaft 1 is located a bronze bushing 22, which is made heavier on oneside than on the'other, as shown. As this eccentric rotates, it impartsto the lower end of the shaft the gyratory motion customary in crushers.of this type. This eccentric is supported at its lower end upon thethrust bearing rings 23, a preferred form of bearing being to provide anupper ring of steel made fast to the bottom of the eccentric, and alower ring of steel made fast to the bot tom piece 24 of the frame, theinterposed ring eing of bronze and being a floating ring. The eccentricis driven by means of the annular rack 21 secured thereto, and withwhich meshes the bevel gear 26 carried by shaft 27 and rotated from anycon- I venient source of power, as, for instance,

by means of belt pulley 28. I prefer to drive the shaft 30 which rotatesthe table by means of a gear 36 meshing with a gear 37 on the shaft 27.

In order to efiiciently lubricate the eccentric bearing, I provide apassage H in the flange or portion 14E towhich may be'connected byasuitable pipe connection a sight feed oil cup (not shown) this passageconnecting by branches h and b so that the oil may not only pass downaround the outside of the sleeve and in at-the bottom of the bearing bypassage 70 but may also pass direct to the surface of the babbltt bypassage h I claim as my invention 1; In a gyratory crusher thecombination with the stationary and moving crushing members, of arotating table receiving ore therefrom, and a stationary scraperremoving the crushed material from said table.

2. In a gyratory crusher, a body or frame having an annular stationarycrushing memher, a shaft suitably journaled at its upper end andcarrying an annular crushing member coiiperating with said stationarymember, said body having an ore receiving chamber below said crushingmembers, a bearing sleeve or ring below said chamber and integral withsaid body and encircling the lower end of the shaft, a table rotatablymounted upon the upper end of said sleeve, means for removing ore fromthe table as itrotates, an eccentric sleeve between said bearing sleeveand the shaft, means for rotating said eccentric sleeve, and means forrotating the table. I

3. In a gyratory'crusher, a body or frame having an annular stationarycrushing memher, a shaft journaled at its upper end and carrying anannular member cooperating with said stationary member, said body havingan ore receiving chamber below said crushing member, a bearing ring orsleeve carried by said body below said chamber, and encircling the lowerend of the shaft and spaced therefrom, an eccentric sleeve interposedbetween said bearing sleeve and the shaft, and having a horizontalannular portion extending. upward beneath the lower edge ofsaid annularsleeve orring, said annular-portion having an upwardly extending annularflange encircling the bearing sleeve or ring, an annular rack carried bysaid upwardlyextending annular flange, a driving gear meshing with saidrack, and means for removing ore from the ore receiving chamber,substantially as described.

In testimony whereof, I affix iny signature in presence of twowitnesses.

BRUCE W. TRAYLOR.

Witnesses:

LOUISA E. SIMsoN, FRANCES R. CnIsFEN.

